Snowden Documents Show That NSA Spied On Allies Prior to Copenhagen Climate Change Meetings

New document released by Snowden shows that NSA intelligence gathering goes well beyond protecting the US from terrorist attacks.  NSA had provided US negotiators with information about tactics and positions that other nations might take at the meeting.  The negotiations failed to result in any formal agreements that would limit carbon emissions.  The release of the Snowden documents will also make it more difficult for nations to trust each other in future negotiations.